Why Tnsnames Ora file is used?

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Tags

1. #descriptors
2. #method
3. #located
4. #connect
5. #protocol
6. #listener
7. #directory
8. #mapped
9. #oracle
10. #names
11. #default
12. #admin
13. #naming
14. #service
15. #tnsnames
16. #network
17. #contains
18. #configuration
19. #local
20. #addresses